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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Representative	Hanna Moos	Italy	1 2 3 4 5
2	Sales Manager	Antonio Moreno	USA	1 2 3 4 5
3	Accounting Manager	Jaime Yorres	USA	1 2 3 4 5
4	Sales Consultant	Georg Pipps	France	1 2 3 4 5
5	Accountant	Pascale Cartrain	USA	1 2 3 4 5
6	Sales Representative	Patricio Simpson	Argentina	1 2 3 4 5
7	Marketing Assistant	Matti Karttunen	USA	1 2 3 4 5
8	Accountant	Pascale Cartrain	Austria	1 2 3 4 5
9	Sales Representative	Pascale Cartrain	Italy	1 2 3 4 5
10	Sales Consultant	Paul Henriot	Italy	1 2 3 4 5
11	Sales Consultant	Howard Snyder	Germany	1 2 3 4 5
12	Sales Manager	Paul Henriot	USA	1 2 3 4 5
13	Owner	Matti Karttunen	France	1 2 3 4 5
14	Sales Manager	Patricio Simpson	Austria	1 2 3 4 5
15	Marketing Assistant	Pascale Cartrain	England	1 2 3 4 5
16	Sales Manager	Pascale Cartrain	Bulgaria	1 2 3 4 5
17	Marketing Manager	Howard Snyder	France	1 2 3 4 5
18	Sales Manager	Antonio Moreno	Argentina	1 2 3 4 5
19	Sales Representative	Paul Henriot	England	1 2 3 4 5
20	Accountant	Hanna Moos	Argentina	1 2 3 4 5
21	Sales Representative	Paul Henriot	Italy	1 2 3 4 5
22	Sales Manager	Patricio Simpson	England	1 2 3 4 5
23	Sales Agent	Georg Pipps	Italy	1 2 3 4 5
24	Sales Agent	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
25	Sales Representative	Howard Snyder	Spain	1 2 3 4 5
26	Sales Consultant	Matti Karttunen	Germany	1 2 3 4 5
27	Owner	Jaime Yorres	Brazil	1 2 3 4 5
28	Sales Agent	Pascale Cartrain	Bulgaria	1 2 3 4 5
29	Sales Consultant	Patricio Simpson	USA	1 2 3 4 5
30	Sales Agent	Matti Karttunen	Bulgaria	1 2 3 4 5
31	Marketing Assistant	Antonio Moreno	Bulgaria	1 2 3 4 5
32	Sales Associate	Hanna Moos	Germany	1 2 3 4 5
33	Sales Associate	Hanna Moos	USA	1 2 3 4 5
34	Marketing Manager	Elizabeth Lincoln	Austria	1 2 3 4 5
35	Accountant	Howard Snyder	Austria	1 2 3 4 5
36	Sales Agent	Patricio Simpson	Italy	1 2 3 4 5
37	Sales Representative	Jaime Yorres	Bulgaria	1 2 3 4 5
38	Sales Associate	Georg Pipps	Argentina	1 2 3 4 5
39	Accounting Manager	Antonio Moreno	Spain	1 2 3 4 5
40	Sales Manager	Hanna Moos	Italy	1 2 3 4 5
41	Owner	Patricio Simpson	USA	1 2 3 4 5
42	Accountant	Elizabeth Lincoln	France	1 2 3 4 5
43	Marketing Manager	Hanna Moos	Bulgaria	1 2 3 4 5
44	Marketing Manager	Howard Snyder	Brazil	1 2 3 4 5
45	Sales Agent	Elizabeth Lincoln	Germany	1 2 3 4 5
46	Sales Consultant	Antonio Moreno	Italy	1 2 3 4 5
47	Accounting Manager	Patricio Simpson	Bulgaria	1 2 3 4 5
48	Accountant	Elizabeth Lincoln	USA	1 2 3 4 5
49	Marketing Assistant	Matti Karttunen	Spain	1 2 3 4 5
50	Owner	Hanna Moos	Austria	1 2 3 4 5
51	Sales Associate	Paul Henriot	Spain	1 2 3 4 5
52	Sales Representative	Pascale Cartrain	Germany	1 2 3 4 5
53	Sales Consultant	Patricio Simpson	Spain	1 2 3 4 5
54	Sales Manager	Howard Snyder	USA	1 2 3 4 5
55	Sales Associate	Antonio Moreno	Brazil	1 2 3 4 5
56	Sales Consultant	Howard Snyder	Argentina	1 2 3 4 5
57	Sales Agent	Elizabeth Lincoln	Germany	1 2 3 4 5
58	Sales Agent	Elizabeth Lincoln	Italy	1 2 3 4 5
59	Accounting Manager	Hanna Moos	Bulgaria	1 2 3 4 5
60	Accountant	Antonio Moreno	USA	1 2 3 4 5
61	Marketing Assistant	Georg Pipps	France	1 2 3 4 5
62	Sales Consultant	Georg Pipps	France	1 2 3 4 5
63	Accountant	Elizabeth Lincoln	USA	1 2 3 4 5
64	Sales Agent	Antonio Moreno	Italy	1 2 3 4 5
65	Sales Agent	Pascale Cartrain	Austria	1 2 3 4 5
66	Marketing Assistant	Georg Pipps	England	1 2 3 4 5
67	Sales Consultant	Paul Henriot	Argentina	1 2 3 4 5
68	Sales Manager	Paul Henriot	Austria	1 2 3 4 5
69	Sales Consultant	Patricio Simpson	Austria	1 2 3 4 5
70	Sales Manager	Hanna Moos	England	1 2 3 4 5
71	Sales Manager	Paul Henriot	Spain	1 2 3 4 5
72	Marketing Manager	Antonio Moreno	France	1 2 3 4 5
73	Marketing Assistant	Pascale Cartrain	Bulgaria	1 2 3 4 5
74	Sales Consultant	Georg Pipps	Germany	1 2 3 4 5
75	Marketing Assistant	Jaime Yorres	Argentina	1 2 3 4 5
76	Accounting Manager	Hanna Moos	Italy	1 2 3 4 5
77	Accounting Manager	Howard Snyder	Bulgaria	1 2 3 4 5
78	Sales Consultant	Antonio Moreno	Argentina	1 2 3 4 5
79	Accounting Manager	Jaime Yorres	Spain	1 2 3 4 5
80	Sales Consultant	Jaime Yorres	USA	1 2 3 4 5
81	Sales Representative	Patricio Simpson	Austria	1 2 3 4 5
82	Owner	Georg Pipps	Germany	1 2 3 4 5
83	Sales Manager	Elizabeth Lincoln	Spain	1 2 3 4 5
84	Marketing Manager	Elizabeth Lincoln	Austria	1 2 3 4 5
85	Accounting Manager	Jaime Yorres	Brazil	1 2 3 4 5
86	Sales Associate	Elizabeth Lincoln	England	1 2 3 4 5
87	Sales Manager	Howard Snyder	France	1 2 3 4 5
88	Accounting Manager	Matti Karttunen	Germany	1 2 3 4 5
89	Sales Associate	Jaime Yorres	France	1 2 3 4 5
90	Accounting Manager	Georg Pipps	Austria	1 2 3 4 5
91	Marketing Assistant	Elizabeth Lincoln	England	1 2 3 4 5
92	Owner	Jaime Yorres	USA	1 2 3 4 5
93	Accountant	Georg Pipps	France	1 2 3 4 5
94	Accountant	Howard Snyder	Germany	1 2 3 4 5
95	Sales Manager	Hanna Moos	France	1 2 3 4 5
96	Sales Manager	Elizabeth Lincoln	France	1 2 3 4 5
97	Sales Representative	Georg Pipps	Austria	1 2 3 4 5
98	Sales Consultant	Elizabeth Lincoln	USA	1 2 3 4 5
99	Sales Agent	Pascale Cartrain	USA	1 2 3 4 5
100	Sales Associate	Patricio Simpson	Argentina	1 2 3 4 5


...251 252 253 254 255 256 257 258 259 260 ... Item 250001 to 251000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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